Column 0 of triangle A127126.

Terms

a(0) =1a(1) =1a(2) =3a(3) =13a(4) =77a(5) =587a(6) =5484a(7) =60582a(8) =771261a(9) =11102828a(10) =178144861a(11) =3149976426a(12) =60825085447